Spring type hand grip exerciser

Claim 1

A spring type hand grip exerciser having a pair of members in which the initial force required to start bringing the two members together and the rate the force increases as the members are brought together is adjustable comprising: a generally hollow body 26 having a first end and a second end, a base adjacent to said second end and being adapted to rest on a flat support surface such as a table; a lever 24 extending into said body adjacent to said second end and attached to said body through a pivot pin 25 whereby said lever may be brought closer to said body by the exertion of force by a user, a first end of said lever extending outwardly from said hollow body and a second end of said lever engaging said pivot pin; a first spring 404 one end of which is operatively connected to the second end 405 of said lever and the opposite end of which is fixedly connected to means 423 secured to said body at a location intermediate of the ends of said body; a disc within said body, adjacent the first end of said body; a rod 408, one end of said rod being secured to the second end of said lever and the other end of said rod being fixed to said disc; two compression springs in said hollow body, separate retainer means supporting each of said springs between said disc and a force selector plate in said body; a force selector knob means rotatably mounted on said hollow body for controlling each of said retainer means to selectively disengage one or both of said separate spring retainer means so that movement of said lever is opposed selectively by (1) only said first main spring 404, or (2) a combination of said first spring and one of said compression springs, or (3) a combination of said first spring and both of said compression springs.